Make compatible with Yarn 2

[umer936]

I decided to try Yarn 2 instead of npm and found that Yarn 2 does not work with foxy.

Yarn 2 has done away with node_modules folder, which is why it looked appealing.

Running composer update returns:

Installing yarn dependencies
➤ YN0050: The --non-interactive option is deprecated
Fallback to previous state for the Asset package
Fallback to previous state for Composer
Installing dependencies from lock file (including require-dev)

  [RuntimeException]
  The asset manager ended with an error

[francoispluchino]

Compatibility added with a3ad5d8.